Sudanese activists have taken to social media to appeal for help for a neglected, government-run orphanage in the capital, Khartoum, where local authorities said 54 children have died over the past three months. The high death toll, reported earlier this week, has caused outrage in the African country, which is wracked by turmoil and economic downslide since an October military coup upended its transition to democratic rule. The orphanage in Khartoum had housed more than 320 children, including 80 with disabilities, who a government statement described as living in “tragic conditions”, sometim…